CN201764851U - Box-type multi-tube pass heat exchanger - Google Patents
Box-type multi-tube pass heat exchanger Download PDFInfo
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- CN201764851U CN201764851U CN2010202160638U CN201020216063U CN201764851U CN 201764851 U CN201764851 U CN 201764851U CN 2010202160638 U CN2010202160638 U CN 2010202160638U CN 201020216063 U CN201020216063 U CN 201020216063U CN 201764851 U CN201764851 U CN 201764851U
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- tube sheet
- heat exchange
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Abstract
The utility model relates to a box-type multi-tube pass heat exchanger which belongs to the technical field of heat exchangers. The box-type multi-tube pass heat exchanger comprises heat exchange tubes, tube plates provided with a diversion cavity, end covers, seal gaskets and a heating medium cavity provided with baffles. The heat exchange tube is a straight tube; the length of the heat exchange tub is 1,000-1,600mm; the diameter Phi of the heat exchange tube is 20-45; the two ends of the heat exchange tube are connected with the tube plate; a fastening bolt hole and two rows of through holes are arranged on the tube plate; each port of the heat exchange tube is welded in the through holes and is connected with the inside of the tube plate; a distance is kept between a welded part and the outside end surface of the tube plate; every two through holes (transversely or longitudinally neighboring) are connected at the outside of the tube plate through milling grooves to form the diversion cavity; and the depth of the milling groove can not arrive at the welding line of the heat exchange tube and the tube plate. The end cover is additionally arranged outside the tube plate; all the heat exchange tubes are connected by the diversion cavity the side surface of which is sealed; the upper part of the upper end cover and the lower part of the lower end cover are respectively provided with one interface as a material inlet and a material outlet; and the heating medium cavity is a closed cavity formed by welding a box body shell provided with the heat exchange tubes with the peripheries of two tube plates, which is provided with a heating medium inlet, a heating medium outlet and a plurality of baffles. The box-type multi-tube pass heat exchanger has the beneficial effects of simple structure, high heat exchange coefficients, easy cleaning, small size as well as convenient maintenance and use.
Description
Technical field
The utility model belongs to technical field of heat exchangers, relates to a kind of box-type multi-tube pass heat exchanger.
Background technology
Shell-and-tube (also being shell and tube) heat exchanger is adopted in the heating of material in the macromolecule production process more.Under the prerequisite of metered flow, in order to increase heat transfer efficiency, generally take to increase the method for the quantity of heat exchanger tube side during design of heat exchanger, to improve the flow velocity of material in heat exchanger, obtain the higher coefficient of heat transfer.Because reasons in structure, traditional shell-and-tube heat exchanger tube side quantity is generally 1～6, and shell side is one; Each tube side has tens of pipelines parallel, makes material overstand in heat exchanger, and flow velocity is also very slow, general not enough 0.1m/s; And the actual internal area of shell side (although deflection plate is arranged) is also very big, and flow velocity is not high yet.Because the polymerisation raw material is subject to thermal polymerization, and is slow excessively as flow velocity, then easily in tube wall polymerization, fouling, the local obstruction of pipeline will take place in overlong time, and is difficult for being washed open, thereby influences heat exchange efficiency and product quality.Adopt quantity that increases tube side and the mode that strengthens the heat exchanger tube pipe range to improve this defective in actual applications, make heat exchanger volume long thereupon, excessive, back inconvenience maintenance, mediation take place to stop up.
The most more complicated of existing box type heat exchanger structure, easily stop up, and easy cleaning not.As a kind of box type heat exchanger of being mentioned among the patent ZL 200720049119.3, use ' heat-exchanging tube bundle bends to many U-shapeds, to comply with many U-shapeds that each side runner is formed side liquid passage ... '.This mentioned heat exchanger cleans casing and heat exchanger tube though can dismantle cover plate, and U-shaped heat exchanger tube warp architecture partial interior will be difficult to clean up, and the structure more complicated of whole heat exchanger.
The utility model content
The utility model provide a kind of simple in structure, the coefficient of heat transfer is high, easy cleaning, box-type multi-tube pass heat exchanger that volume is little.
The technical scheme that the utility model technical solution problem adopts is as follows:
This box-type multi-tube pass heat exchanger comprises heat exchanger tube, have the tube sheet of diversion cavity, end cap, gasket seal and have the heat medium cavity of deflection plate.Each heat exchanger tube is a straight tube, heat exchange pipe range 1000-1600mm, and heat exchanger tube diameter of phi 20-45, its two ends link to each other with tube sheet.The tube side serviceability temperature is 75-260 ℃, and the shell side serviceability temperature is 180-300 ℃.
Each tube sheet of the two ends of this box-type multi-tube pass heat exchanger has fastening screw keyhole and two row through holes on the tube sheet; Each heat exchanger tube port is welded in the through hole and links to each other with tube sheet is inboard, and weld and tube sheet outside end face leave certain distance.Wherein left tube sheet communicates from the outside with the horizontal groove milling of a pair of through hole topmost, and the groove milling degree of depth can not arrive the commissure of heat exchanger tube and tube sheet, as the starting point of fluid course; Also horizontal groove milling links to each other a pair of through hole of left side tube sheet least significant end from the outside, as the terminal point of fluid course; All the other left tube sheet through holes in order from top to bottom from the outside with the groove milling successively of adjacent two holes, form diversion cavity, the groove milling degree of depth can not arrive the commissure of heat exchanger tube and tube sheet; And have also on the corresponding right tube sheet of left tube sheet that quantity is identical, arrangement and left tube sheet mirror be to the through hole of symmetry, two row through holes on the right tube sheet all from top to bottom communicate adjacent two holes groove milling successively from the tube sheet outside, form diversion cavity, the same groove milling degree of depth can not arrive the commissure of heat exchanger tube and tube sheet.
Tube sheet adds end cap, is provided with gasket seal between end cap and the tube sheet, with bolt it is pressed abd fixed on the tube sheet, makes the tube sheet sealing; All heat exchanger tubes link to each other by the diversion cavity of side seal, have formed the two row passage in parallel of turning back back and forth between the tube sheet of two ends.End cap respective tube plate runner Origin And Destination place respectively opens an interface, as material inlet and material outlet.The quantity of tube sheet end cap can be according to heat exchanger tube quantity how much be arranged to one or more; If during the polylith end cap, the starting point place of uppermost end cap respective tube plate runner opens an interface, as material inlet, reaches the corresponding runner destination county of nethermost end cap and opens an interface, as material outlet.
Heat medium cavity is welded the enclosed cavity that forms for cabinet shell and the two tube sheets periphery that heat exchanger tube is installed, and heat medium cavity is established capable heating agent import and heating agent outlet up and down respectively; Heat medium cavity inside is provided with a plurality of deflection plates along the heat exchanger tube direction.
The beneficial effects of the utility model be simple in structure, the coefficient of heat transfer is high, easy cleaning, volume are little, keeps in repair easy to use.
Description of drawings
Accompanying drawing 1 is the utility model box-type multi-tube pass heat exchanger structure diagram.
Accompanying drawing 2 is left tube sheet outboard structure sketch.
Accompanying drawing 3 is right tube sheet outboard structure figure.
Accompanying drawing 4 is the casing profile.
Accompanying drawing 5 is the enlarged diagram at I place in the accompanying drawing 1.
Accompanying drawing 6 is the enlarged drawing of accompanying drawing 1 diversion cavity.
Among the figure: the outlet of 1 heating agent; 2 bolts; 3 material inlets; 4 left end caps; 5 sealing gaskets; 6 diversion cavity; 7 heat exchanger tubes; 8 material outlets; 9 left tube sheets; 10 heating agent imports; 11 cabinet shells; 12 deflection plates; 13 heat medium cavity; 14 right tube sheets; 15 right end caps; 16 through holes.
The specific embodiment
Be described in detail specific embodiment of the utility model below in conjunction with technical scheme and accompanying drawing.
As shown in drawings, comprise heating agent outlet 1, bolt 2, material inlet 3, left end cap 4, sealing gasket 5, diversion cavity 6, heat exchanger tube 7, material outlet 8, left tube sheet 9, heating agent import 10, cabinet shell 11, deflection plate 12, heat medium cavity 13, right tube sheet 14, right end cap 15 and through hole 16.
Heated material enters from heat exchanger tube one end through material inlet, flows to the heat exchanger tube other end, and enters next row's heat exchanger tube by diversion cavity.Material passes through successively by heat exchanger tube-diversion cavity-heat exchanger tube ..., flow out from material outlet.
By several deflection plate water conservancy diversion with casing welding, the heating agent after the heat exchange is by heating agent outlet outflow by the heating agent import for heating agent.
Because heat exchanger tube side runner quantity is few, under metered flow its flow velocity higher relatively (〉=0.5m/s), can prevent effectively that pipeline silting phenomenon from taking place.If pipeline silting phenomenon (being generally improper reason causes) occurred, then heat exchanger tube side flow velocity and differential pressure will have by a relatively large margin and promote, and then the silting thing is washed open, reach self-cleaning.Block phenomenon (being generally improper reason causes) even heat exchanger silts up, then detachably descend the end cap at heat exchanger two ends, easily the thing that silts up in the straight short tube is removed, resume production.
A plurality of deflection plates of arranging along the heat exchanger tube direction of shell side have dwindled the actual internal area of heating agent as much as possible, have strengthened the length of the flow velocity and the shell side of heating agent, and heat exchange efficiency is improved.
Use as its raw material caprolactam preheater in polyamide fibre 6 polymerization production process:
Following table is in the same factory, traditional 20m
2Shell-and-tube heat exchanger and 10m of the present utility model
2Heat exchanger carries out the comparative example of heating agent heat exchange:
| Project | The tradition shell-and-tube heat exchanger | The utility model box-type multi-tube pass heat exchanger |
| Heat exchange area | 20m 2 | 10m 2 |
| Disposal ability | 1012kg/h | 1845kg/h |
| Variations in temperature after the material heat exchange | Rise to 187 ℃ from 85 ℃ | Rise to 179 ℃ from 102 ℃ |
| Variations in temperature after the heating agent heat exchange | Reduce to 210 ℃ from 245 ℃ | Reduce to 203 ℃ from 250 ℃ |
| The heating agent control valve opening | 93％ | 16％ |
| Heat transfer coefficient (KJ/h.m 2.℃) | 56.4 | 201.6 |
In the table as can be seen: conventional tube shell heat exchanger heat transfer coefficient is very low, its few of raising output space as can be seen on the aperture of control valve; The utility model is compared traditional heat exchangers and is had very big advantage.
Claims (1)
1. box-type multi-tube pass heat exchanger comprises heat exchanger tube, has tube sheet, end cap, the gasket seal of diversion cavity and has the heat medium cavity of deflection plate, it is characterized in that, each heat exchanger tube (7) is a straight tube, heat exchange pipe range 1000-1600mm, heat exchanger tube diameter of phi 20-45, its two ends link to each other with tube sheet;
Each tube sheet (9,14) of the two ends of this box-type multi-tube pass heat exchanger has fastening screw keyhole and two row through holes (16) on the tube sheet; Each heat exchanger tube port is welded in the through hole and links to each other with tube sheet is inboard, and weld and tube sheet outside end face leave distance; Tube sheet (9) communicates from the outside with the horizontal groove milling of a pair of through hole topmost, and the groove milling degree of depth can not arrive the commissure of heat exchanger tube and tube sheet, as the starting point of fluid course; Also horizontal groove milling links to each other a pair of through hole of tube sheet (9) least significant end from the outside, as the terminal point of fluid course; All the other tube sheets (9) through hole in order from top to bottom with the groove milling successively of adjacent two holes, forms diversion cavity (6) from the tube sheet outside, and the groove milling degree of depth can not arrive the commissure of heat exchanger tube and tube sheet; And have on the corresponding tube sheet (14) of tube sheet (9) that quantity is identical, arrangement and tube sheet (9) mirror be to the through hole of symmetry, two exhausting holes on the tube sheet (14) all from top to bottom communicate adjacent two holes groove milling successively from the tube sheet outside, and the same groove milling degree of depth can not arrive the commissure of heat exchanger tube and tube sheet;
Tube sheet adds end cap (4,15), is provided with sealing gasket (5) between end cap and the tube sheet, with bolt (2) it is pressed abd fixed on the tube sheet, makes the tube sheet sealing; All heat exchanger tubes link to each other by the diversion cavity of side seal, have formed the two rows passage in parallel of turning back back and forth between the tube sheet of two ends; End cap (4) respective tube plate runner Origin And Destination place respectively opens an interface, as material inlet (3) and material outlet (8); How much quantity of every side end cap is provided with one or more according to heat exchanger tube quantity;
Heat medium cavity is welded the enclosed cavity that forms for the cabinet shell (11) that heat exchanger tube is installed with two tube sheets periphery, and heat medium cavity (13) is respectively equipped with heating agent import (10) and heating agent outlet up and down; Heat medium cavity inside is provided with a plurality of deflection plates (12) along the heat exchanger tube direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202160638U CN201764851U (en) | 2010-05-30 | 2010-05-30 | Box-type multi-tube pass heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202160638U CN201764851U (en) | 2010-05-30 | 2010-05-30 | Box-type multi-tube pass heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201764851U true CN201764851U (en) | 2011-03-16 |
Family
ID=43717459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202160638U Expired - Lifetime CN201764851U (en) | 2010-05-30 | 2010-05-30 | Box-type multi-tube pass heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201764851U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929808A (en) * | 2010-05-30 | 2010-12-29 | 大连海新工程技术有限公司 | Box-type multi-tube pass heat exchanger |
| CN107339904A (en) * | 2017-07-10 | 2017-11-10 | 珠海格力电器股份有限公司 | Heat exchanger and the marine air conditioner for including it |
-
2010
- 2010-05-30 CN CN2010202160638U patent/CN201764851U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101929808A (en) * | 2010-05-30 | 2010-12-29 | 大连海新工程技术有限公司 | Box-type multi-tube pass heat exchanger |
| CN107339904A (en) * | 2017-07-10 | 2017-11-10 | 珠海格力电器股份有限公司 | Heat exchanger and the marine air conditioner for including it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110316 Effective date of abandoning: 20120523 |